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Old 13th August 2005, 12:17 PM   #1
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Default MY_REF technical description

Free of charge to the little that have understanded something of my circuit, and to the DIYs members that have "bet" on my idea, investing the they money and their time. I thank George (Josef_K) for his help in the translation, and to have convinced me to publish this document.

GoodBye

Mauro
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Old 13th August 2005, 12:57 PM   #2
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Default Thanks for sharing

Quote:
Originally posted by mauropenasa
Free of charge to the little that have understanded something of my circuit, and to the DIYs members that have "bet" on my idea, investing the they money and their time. I thank George (Josef_K) for his help in the translation, and to have convinced me to publish this document.

GoodBye

Mauro

Thank you for sharing your ideas and designs to some of us less gifted. The layout and features of the Reference A boards are at standard way above my usual cobbled up diy efforts.
Also, thank for sharing this paper on the design process.

George
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Old 13th August 2005, 01:03 PM   #3
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Thanks alot, Mauro
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Old 13th August 2005, 01:18 PM   #4
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Mauro:

Thank you very much for the explanation of your circuit.

Very generous of you to create document to go with your amp design.

Sheldon
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Old 13th August 2005, 02:53 PM   #5
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Hi, Mauro,

How to calculate
-Ccmp+Rcmp
-Cff
-Cbf
-Cf
And what is the criterion of each?
- "My-ampli" uses only 1 capacitor in the place of Ccmp+Rcmp. Is it possible just to use 1cap only instead of (Ccmp+Rcmp)? Whats the difference?

I'm thinking about making your design but with full discrete components. What do you say about this?
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Old 13th August 2005, 06:38 PM   #6
inguz is offline inguz  United States
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Wonderful document, and a fascinating design -- many thanks. And also to Josef_K for the very clear translation.
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Old 5th September 2005, 01:23 PM   #7
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Hi all,
I even add the Italian version...

Ciao

Mauro
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Old 5th September 2005, 09:29 PM   #8
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Default Discrete output version.

I would love to use some dicretes here instead of the LM3886. Should work fine, but may not equal the Referance as it is.
I have a few matched pairs of 2SJ162/2SK1058 mosfets that might be perfect. Guess I need to study the schematics a little.
Since the LM3886 is just a current pump, this is easier to do than it would be if the output stage was a voltage and current gain.

George
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Old 5th September 2005, 09:34 PM   #9
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Default Re: Discrete output version.

Quote:
Originally posted by Panelhead
I would love to use some dicretes here instead of the LM3886. Should work fine, but may not equal the Referance as it is.
I have a few matched pairs of 2SJ162/2SK1058 mosfets that might be perfect. Guess I need to study the schematics a little.
Since the LM3886 is just a current pump, this is easier to do than it would be if the output stage was a voltage and current gain.

You may clone the Musical Fidelity A-270, which Mauro has already mentioned. Though I don't know if those are the right MOSFETs for that project.


Carlos
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Old 22nd October 2005, 12:59 PM   #10
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Default Thanks, Mauro

I'm a little "late to the table". I benefit from your generosity.
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